var footerY = 600;

function moveTopDivs(layerObj, inObjTop, inObjLeft){
	layerObj.top  = inObjTop;
	layerObj.left  = inObjLeft;
} 

function getDim(el){
	for (var lx=0,ly=0;el!=null;
		lx+=el.offsetLeft,ly+=el.offsetTop,el=el.offsetParent);
	return {x:lx,y:ly}
}

function setTopLayerPosition(resizeFlag)
{
	if (document.all && document.all["footer_layer"]!=null)
	{
		moveTopDivs(document.all["footer_layer"].style, getDim(document.images.backtotopspacer).y, getDim(document.images.backtotopspacer).x)
		if (getDim(document.images.backtotopspacer).y > footerY)
		{
			if (resizeFlag)
			{document.all["footer_layer"].style.visibility = "visible"}
		}
	}
	if (document.layers && document.layers["footer_layer"])
	{
		moveTopDivs(document.layers["footer_layer"], document.images["backtotopspacer"].y, document.images["backtotopspacer"].x);
		if (document.images["backtotopspacer"].y > footerY)
		{
			if (resizeFlag)
			{document.layers["footer_layer"].visibility = "show"}
		}
	}
	if (!document.all && document.getElementById && document.getElementById("footer_layer")!=null)
	{
		moveTopDivs(document.getElementById("footer_layer").style, document.images["backtotopspacer"].y, document.images["backtotopspacer"].x);
		if (document.images["backtotopspacer"].y > footerY)
		{
			if (resizeFlag)
			{document.getElementById("footer_layer").style.visibility = "visible"}
		}
	}
} 

onresize=setTopLayerPosition;